What are the answers to these 2 questions? If you want, you can explain, but it’s not needed.

Find the solution of this system of equation -7x+y=-20 9x-3y=36

1c) the number 131 is a term in the sequence defined by the explicit rule f(n)=5n-4. which term in the sequence is 131? 2a) write the first four terms of the function f(n)=n^2-1 2b) what is the 10th term of the sequence defined by the explicit rule f(n)=n^2-1 2c) the number 224 is a term in the sequence defined by the explicit rule f(n)=n^2-1. which term in the sequence is 224?

9/10 divide by -3/15 as a mixed number